1- Patching or updating Availability Group replicas when SQL Server is installed in Cluster mode
2- How to failover SQL Server instance from one node to another node in SQL Server?
3- How to apply Patch on secondary replica when Availability Group is setup on the server?
4- How to check if availability group is working fine after patching on secondary replica?
5- How to resume database movement in SQL Server Availability group?
6- How to failover SQL Server resources from one node to another node?